Pressure Die Casting

Description

Learn about pressure die casting
Today, pressure casting molds are widely used and mainly for manufacture complex details such as brass trumpets, air valves, etc. The raw materials used to make this product are mainly lead, zinc, and aluminum. , copper…
In addition, alloys used for pressure casting must be selected based on criteria such as not having too many impurities, because iron has a high melting point that will reduce the melting point of the alloy. susceptible to corrosion and oxidation. Not only that, the alloy must be less soluble in gas because the dissolved gas easily creates difficult pitting, forming metal oxides and leading to reduced mechanical properties of castings. The alloy must ensure the ability to move easily when in the liquid state because if the liquid metal is difficult to move, it will not fill the entire mold.

Advantages Of Die Casting

• High gloss and precision.
• The mechanical properties of castings are high thanks to the high density of castings. To casting complex, thin-walled (1¸5mm) castings, small holes can be cast.
• High productivity thanks to fast filling and favorable mechanization.

Disadvantages of Die Casting

• Can not be used for sanding because the flow is pressurized. Therefore, the shape of the hole or the inside must be simple.
• Pressure die castings are often abrased due to the pressurized flow of the alloy at high temperatures.

Working principle of pressure die casting
Pressure casting is a technology in which liquid metal is filled into a mold and solidified by the action of high pressure. Pressure casting mold consists of 2 mold halves, when starting to cast, the two halves of the mold will be closed, liquid metal will be poured into the press chamber. Time to pour liquid metal into the mold is very fast under high pressure. That pressure level will continue to be maintained until the casting solidifies. Finally, the core will be removed from the casting and the push pin takes the casting out of the mold, the casting process is finished.